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Cirsium occidentale  (Nutt.) Jeps.  var. occidentale 
Cobweb thistle,   Cobwebby thistle
© 2022 Suzanne L. Weakley
© 2020 Coty Sifuentes-Winter
© 2019 Randy Huey
© 2022 Mary Conway
© 2022 Cynthia Powell
© 2018 Ken Hickman
© 2020 R.A. Chasey
© 2021 Lara Ferraro
© 2019 Randy Huey
© 2023 Ron Vanderhoff
© 2021 Suzanne L. Weakley
© 2022 Ron Vanderhoff
© 2022 Cynthia Powell
© 2022 Ron Vanderhoff
© 2022 Mary Conway
© 2013 James Gonsman
© 2019 Ken Hickman
© 2021 Suzanne L. Weakley
© 2022 R.A. Chasey
Cirsium occidentale var. occidentale is a perennial herb that is native to California, and endemic (limited) to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Parent: Cirsium occidentale
Genus: Cirsium
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by JEF + PLANTS + POWO
Alternate Names:
PLANTSCirsium coulteri
Information about  Cirsium occidentale var. occidentale from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (CIOCO)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/31/2025).